The newly installed director of the National Security Agency says that while he has seen some terrorist groups alter their communications to avoid surveillance techniques revealed by Edward J. Snowden, the damage done over all…

The New York City subway system may run 24 hours a day and represent the most efficient means to get around the metropolis, but it has long been a sore spot for anyone looking to continue their cellular calls.

The big announcements at Google's I/O event in San Francisco Wednesday didn't mention Web search, the technology that got the company started and made it so successful. But in a small session later that day, the inventor andRay…

The success of informatics would have been impossible without the groundwork provided by logicians; and, in turn, computer sciences keep posing new interesting questions, which can only be answered by formal logic.